Patent US2643895A successfully refreshed from Google Patents.
Patent US2704364A successfully refreshed from Google Patents.
US2704364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Velocity well logging
Assignee: ExxonMobil Oil Corp
•
Filing: 1950-10-28
•
Granted: 1955-03-15
•
Expires: 1970-10-28
Abstract
No abstract record available.
Inventors
- 👤 Gerald C Summers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:15
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/44; G01V1/48; G01V1/50
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2191119A
Cited
US2120971A
Cited
US2200476A
Cited
GB469417A
Cited
US2225668A
Cited
US2233992A
Cited
US2238991A
Cited
US2231243A
Cited
US2492617A
Cited
US2522433A
Cited
US2599586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-14 | 1958-09-13 | 1959-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-14 | 1962-09-13 | 1963-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-14 | 1966-09-13 | 1967-03-15 | $7700.00 | Window Closed / Lapsed |